The 2025/26 Champions League proper started in style on Tuesday evening with opening day victories for Real Madrid, Arsenal and Spurs plus first-ever league phase successes for Qarabağ and Belgian side Union Saint-Gilloise.In Madrid, the 15-time champions began their quest to reclaim the coveted trophy with a hard fought 2-1 win over Marseille – Kylian Mbappé the match winner with both goals – we hear from the French striker.North London rivals Arsenal and Spurs both began their campaigns with victories – the Gunners winning 2-0 at Athletic Club and Tottenham seeing off Villarreal 1-0 at home. We hear from Arsenal's Player of the Match Gabriel Martinelli as well as Tottenham defender Micky van de Ven.Elsewhere, Juventus and Borussia Dortmund played out an incredible 4-4 draw in Turin, with all eight goals coming in the second half, and Qarabağ came from 2-0 down to earn a stunning 3-2 win against Benfica in Lisbon, but arguably the performance of the night took place in Eindhoven where league phase debutants Union SG secured a historic 3-1 win against PSV – we hear from their opening goalscorer Promise David.We also look ahead to Wednesday's Matchday 1 encounters, including our featured commentary game between Liverpool and Atleti, hearing from the Reds' manager Arne Slot.